Injector.



' D. W. PATTON.

INJBGTOR. APPLICATION FILED 00T. 20, 1910.

Patenta Aug. 15- i911.

W\k\ Mw COLUMBIA PLANGGIIAPH C0.. WAsHlNu'roN D c DAVID WILLIAMSON PATTON, OF MOBERLY, MISSOURI.

INJ'EGTOR.

Specification of Letters Patent.

Patented Aug. 15, 1911.

Application led October 20, 1910. 'Serial No. 588,160.

To all whom it may concern: v

Be it known that I, DAVID WILLIAMSON PATroN, a citizen of the United States, residing at Moberly, in the county of Randolph and State of Missouri, have invented certain new and useful Improvements in Injectors; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable-others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in injectors.

One object of the invention is to provide an improved construction of injector having means whereby the air or steam in the injector may readily escape or be forced out to the atmosphere without retarding or interfering with the flow of the water injected into the boiler.

Another object is to provide means whereby the delivery and other tubes of the injector may be protected from wear and corrosion thus greatly prolonging the life and saving the expense of frequently renewing the tube as is necessary in the present form of injectors.

Another object is to provide an improved construction of valve for the delivery end of the injector, said valve being arranged and supported in such manner asto prevent the same from interfering with the free passage of the water through the injector.

With these and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings: Figure 1 is a longitudinal sectional view of a portion of an injector showing my improvements applied thereto; Fig. 2 is a similar view on a large scale of the delivery end of the injector; Fig. 3 is a cross sectional view on the line 3 3 of Fig. 2.

Referring more particularly to the drawing, 1 denotes the front portion of the tubular body of the injector in the outer end of which is arranged the delivery end connection 2 whereby the injector is connected to the boiler. The front body portion of the injector is detachably connected with the rear I \the injector is a lifting tube 7 said tube being held in position by a flange 8 which is clamped between the engaging ends of the front and rear portion of the injector tube as shown. With the rear end of the tube 7 'is engaged the forward'end of a steam nozzle v9. The forward end of the injector tube 7 projects into and is operatively connected withthe rear end of the combining tube 10, on the forward endof which is formed an interiorly threaded socket 11 into which is screwed the inner or rear end of a delivery tube 12. The forward end of the delivery tube 12 )projects into and has a threaded connection with the reduced inner endof the delivery end connection2 of the injector as shown.

In connection with the delivery tube and, if desired, with the lifting and combining tubes I employ a protective lining in the form of a metal tube 13 which is adapted to be inserted in and to closely fit the tubes l with which the same is engaged and which serves to protect the tubes from wear and corrosion and saves the expense of frequently renewing the tubes as is necessary in the forms of injectorsnow in use. By providing the tubular linings 13 the latter may be readily removed when worn and new linings engaged with the tubes thus quickly and inexpensively restoring the same to their proper working conditions. tubular linings 13 are .preferably held in the tubes of the injector by set screws 14. If desired the inner surfaces of the tubes with whichthe liningsare engaged may be provided with longitudinally disposed grooves The . the tubes.

or channel 15 which form a series of passages between the lining and the inner surfaces of the tubes. The grooves or channels 15 may project straight through the tube or said grooves may be arranged spirally or at any desired angle and they are provided to permit the rapid discharge or evacuation of any air or steam which may be in the body of the injector without interfering with the passage or flow of water through the tubes. This discharge or evacuation of the air or steam in the delivery end connection of the injector is also facilitated by means of an annular series'of discharge passages 16 arranged in the juncture of the reduced inner portionof the delivery end section 2 of the injector and: the enlarged j out'er portion of said section as shown. In

the. formsl of the injectors now in use a pocket is provided to receive the air in the body portion of the injector or said air is obliged to pass out through the same passage through which the injected lwater and i steam is flowing, thus interfering with or retarding the free flow of the water through between said walls andthe lining tubes 13 readily escape from the body portion of the injector or will be forced out by the passage ofthe steam and water through the tubes without in any manner interfering with the l and connecting section arranged 1n the outer l Formed in the delivery end connection of free flow ofthe water.v

the injector is a valve seat 17 with which is engaged a check valve 18, said valve being hingedly connected at its upper side to the j upperportion of the delivery endsection 2 by means of an eye bolt 19v or other suitable i hinge member whereby the valve will swing loosely out of engagement with its -seat when engaged by the pressure of the steam and water being injected through the tubes and which will immediately close by gravity as soon -as the flow of steam and water has been stopped, thus preventing any water or steam from the boiler entering the injector. By arranging the valve as herein shown and described it will be seen that the same will swing clear of its seat and will not interfere with or present any obstruction to the flow of the water passing through the' injector'. Y y

In the present instance the lining tube `1 3 is shown as being applied onlyto the delivery tube 12. Itis obvious however that the lining may be applied to all ofthe tubes of the injector as hereinbefore described. The delivery tube is also here shown as having arranged therein the discharging or evacuating grooves whichv act in connection with the passages 16, to'permit the quick discharge'of the air from the. delivery v'section By means of the air discharge grooves in the inner walls of the tube and 1 of the injector but it will be understood that I may employ the lining tubes in connection with the injector tubes without forming the discharge grooves in the latter.

From the foregoing description takenin connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a more extended' explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to without departing from the *principle or sacrificing any of the advantages of the invention as defined in the appended claims.

Having thus described my invention, what I claim is:

1. In an injector, a tubular body, a delivery tube operatively mounted in said tubular body, said tube having formed in its inner surface a series of grooves forming discharge passages and aremovable lining adapted to be engaged with the grooved inner surface of` said delivery tube.

2. In an injector, a tubular body portion, a delivery end connecting section arranged in the outer end of said body portion, said section having a reduced inner end, and a series of discharge passages formed therein adapted to permit the escape of the air in said section.

8. In an injector of the character described, a tubular body portion, a delivery end of saidA body portion, a series of discharge passages formed therein, a hinged check valve arranged in said body portion and adapted to swing out of the path of the iniowing water passing therethrough, and an eye-bolt through the wall of the body portion, said eye-bolt forminga hinge for said check valve. j Y

4:. In an injector of the vcharacter described', a tubular body portion, a delivery end connecting section having' a reduced inner end provided with a seriesof air discharging passages,` a delivery tube inserted in and engaged with the reduced inner end ofsaidend connecting section, a combining tubey operatively' connected to said delivery' having formed therein a series of spiral In testimony whereof vI have hereunto set grooves adapted to form air discharge pasmy hand in presence 0f tWo subscribing Witsages, a removable lining adapted t0 be ennesses.

gaged With the grooved inner surfaces of DAVID WILLIAMSON PATTON. 5 said delivery tube whereby the latter is pro- Witnesses:

tected from Wear and corrosion and means J. W. DORSER,

to secure said lining in position in the tube. A. H. BORGMEYER.

Copies of this patent may be obtained for five 4cents each, by addressing the Commissioner of Patents. Washington, D. C. 

